good evening,my 69 sprite is really acting up and i'm about to go nuckin' futts. it barely runs and when it does it's not good,i get pops thru the exhaust & intake,will not take any acceleration,misfiring,moving distributor has no effect.points,condenser,plugs,cap,rotor,wires,coil,timing chain are all new.the 1275 engine only has 43k miles on it.dry compression checks @ 120 psi on 3 cyls.& 115 psi on 1 cyl. valve lash is set @.012 cold.need some help,any id-ers out there? i'd appreciate it thanks bob

How are the carbs set up. Too lean will produce the same results.

Chokes stuck/closed or a clogged fuel pump will do something similar?

Did this just start happening? If yes, then what was done immediately before it started running poorly? Check your firing order on the plug wires. 1-3-4-2. If the distrbutor cap is a side entry cap, it is very easy to cross two of the wires. BTDT.

You might also inquire under the Spridget section.

worth checking the carbs and any in line filters in the fuel system. I had a similiar issue after I had ran out of gas on a test run. Looked like I picked up some junk and now I'm chasing it out of the system.

Could also be a leak on the tank side of the pump, sucking air?

Does sound like fuel if it fires right off...

Good luck

Michael
55 - BN1

john, thanks for the reply.i had put all the tune up parts in the car,and it was running fine,then it took this dump and thats when i changed the timing set.to no avail. bob

thanks to all who have responded,keep the suggestions coming.bob

i'll check that thanks

have plenty of fuel,but will check chokes thanks

it does'nt change either way.thanks

If it is firing back through the exhaust and carb then it is sparking at the wrong time,check your distributor cap and rotor for cracks ,could be an internal short ,if you still have the old ones try them,

Make sure the condenser wire is not shorting out -- it must be insulated from ground usually with a fiber washer.

thanks guys will check it out.

good news,got her running about a week ago.put in a pertronix ignitor module & flamethrower coil,new plugs,re-set distributor drive in engine, re-adjusted carbs,re-set valve lash.she starts and purrs like a kitten.thanks to all for your help!

That's one way to fix a car! Just replace everything and not worry about what was really wrong! I like your approach!